Question

❗❗❗❗ТЕРМІНОВО, В МЕНЕ РІЧНА❗❗❗❗ 1. Визначте положення атомів у періодичній системі хімічних елементів та обчисліть число протонів, нейтронів, електронів у атомах елементів:а) Хлор;б) Кальцій;в) Кобальт.2. Напишіть схему будови атома й електронну формулу запропонованих атомів, укажіть кількість вільних квантових комірок, кількість спарених і неспарених електронів:а) Алюміній;б) Берилій;в) Неон.3. Просту речовину, утворену хімічним елементом, електронна формула зовнішнього енергетичного рівня якого - ...3s23p³, спалили в кисні масою3,2 г. Обчисліть масу простої речовини, що витратили в результаті реакції.​

Answer 1

Position of Atoms in the Periodic Table and Atomic Structure

The position of atoms in the periodic table is determined by their atomic number, which corresponds to the number of protons in the nucleus of an atom. The atomic number also determines the number of electrons in a neutral atom. The periodic table is organized in rows called periods and columns called groups.

1. Chlorine (Cl): - Atomic number: 17 - Number of protons: 17 - Number of neutrons: Varies (typically 18) - Number of electrons: 17 - Source 1: Chlorine is located in Group 17 (Group VIIA) and Period 3 of the periodic table [[1]].

2. Calcium (Ca): - Atomic number: 20 - Number of protons: 20 - Number of neutrons: Varies (typically 20) - Number of electrons: 20 - Source 2: Calcium is located in Group 2 (Group IIA) and Period 4 of the periodic table [[2]].

3. Cobalt (Co): - Atomic number: 27 - Number of protons: 27 - Number of neutrons: Varies (typically 32) - Number of electrons: 27 - Source 3: Cobalt is located in Group 9 (Group VIIIB) and Period 4 of the periodic table [[3]].

Atomic Structure and Electron Configuration

The atomic structure of an atom consists of a nucleus containing protons and neutrons, surrounded by electrons in energy levels or shells. The electron configuration describes the distribution of electrons in these energy levels.

1. Aluminum (Al): - Atomic number: 13 - Number of protons: 13 - Number of neutrons: Varies (typically 14) - Number of electrons: 13 - Electron configuration: 1s² 2s² 2p⁶ 3s² 3p¹ - Number of valence electrons: 3 - Number of paired electrons: 10 - Number of unpaired electrons: 3 - Source 4: The electron configuration of aluminum is 1s² 2s² 2p⁶ 3s² 3p¹ [[4]].

2. Beryllium (Be): - Atomic number: 4 - Number of protons: 4 - Number of neutrons: Varies (typically 5) - Number of electrons: 4 - Electron configuration: 1s² 2s² - Number of valence electrons: 2 - Number of paired electrons: 4 - Number of unpaired electrons: 0 - Source 5: The electron configuration of beryllium is 1s² 2s² [[5]].

3. Neon (Ne): - Atomic number: 10 - Number of protons: 10 - Number of neutrons: Varies (typically 10) - Number of electrons: 10 - Electron configuration: 1s² 2s² 2p⁶ - Number of valence electrons: 8 - Number of paired electrons: 10 - Number of unpaired electrons: 0 - Source 6: The electron configuration of neon is 1s² 2s² 2p⁶ [[6]].

Calculation of Mass of Substance

To calculate the mass of a substance, we need to know the balanced chemical equation for the reaction and the molar mass of the reactants and products involved. Unfortunately, the provided information does not include the balanced chemical equation for the reaction or the molar mass of the substance being burned. Therefore, it is not possible to calculate the mass of the substance based on the given information.

If you can provide the balanced chemical equation and the molar mass of the substance, I would be happy to help you calculate the mass of the substance involved in the reaction.

I hope this information helps! Let me know if you have any further questions.